IS 455-1989 Portland slag cement-specification

IS 455-1989 Portland slag cement-specification

ID:44054884

大小:926.14 KB

页数:14页

时间:2019-10-18

IS 455-1989 Portland slag cement-specification_第1页
IS 455-1989 Portland slag cement-specification_第2页
IS 455-1989 Portland slag cement-specification_第3页
IS 455-1989 Portland slag cement-specification_第4页
IS 455-1989 Portland slag cement-specification_第5页
资源描述:

《IS 455-1989 Portland slag cement-specification》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库

1、IIS455:1888(Reaffiid19951IndianStandardPORTLANDSLAGCEMENT-SPECIFICATION(FourthRevision)SecondReprintSEPTEMBER1998UDC666’943@BIS1990BUREAUOFINDIANSTANDARDSMANAKBHAVAN,9BAHADURSHAHZAFARMARGNEWDELHI110002May1990e-4CenmntandConcreteSectionalCommittee,CED2FOREWORDThisIndianStandard(FourthRevision)wasa

2、doptedbytheBureauofIndianStandardson30October1989,afterthedraftfinalizedbytheCement.andConcreteSectionalCommitteehadbeenapprovedbytheCivilEngineeringDivisionCouncil.Portlandslagcementisobtainedbymixing,Portlandcementclinker,gypsumandgranulatedslaginsuitableproportionsandgrindingthemixturetogetath

3、oroughandintimatemixbetweentheconsti-tuents.ItmayalsobemanufacturedbyseparatelygrindingPortlandcementclinker,gypsumandgranulatedslagandthenmixingthemintimately..TheresultantproductisacementwhichhasphysicalpropertiessimilartothoseofordinaryPortlandcement.Inaddition,ithaslowheatofhydrationandisrela

4、tivelybetterresistanttosoilsandwatercontainingexcessiveamountsofsulphaterofalkalimetals.aluminaandiron,aswell-astoacidicwaters,andcan,therefore,be‘usedformarineworkswithadvantage.ThemanufactureofPortlandslagcementhasbeendevelopedprimarilytoutilizeblastfumaceslag,awasteproductfromblastfurnaces.The

5、developmentofmanufactureofthistypeofcementwillconsiderablyincreasethetotaloutputofcementproductioninthecountryandwill,inaddition,pro-videaprofitableuseforanotherwisewasteproduct.Theslagsobtainedfromothertypesoffurnaces,buthavingidenticalpropertiesasthoseofgranulatedblastfumaceslagconformingtothis

6、standard,mayalsobeusedformanufactureofPortlandslagcement.Thisstandardwasfirstpublishedinlb53andsubsequentlyrevisedin1962,1967and1976.Thisfourthrevisionincorporatesthemodificationsrequiredasaresultofexperiencegainedwiththeuseofthisspecificationandtobringthestandardinlinewithtlsepresentpracticesfol

7、lowedintheproductionandtestingofcement.Sincepublicationofthethirdrevisionofthisstandard,largenumberofamendmentshavebeenissuedfromtimetotimeinordertomodifyvariousrequirementsbasedontheexperiencegainedwiththeuseofthestan

当前文档最多预览五页,下载文档查看全文

此文档下载收益归作者所有

当前文档最多预览五页,下载文档查看全文
温馨提示:
1. 部分包含数学公式或PPT动画的文件,查看预览时可能会显示错乱或异常,文件下载后无此问题,请放心下载。
2. 本文档由用户上传,版权归属用户,天天文库负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容,确认文档内容符合您的需求后进行下载,若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误,付费完成后未能成功下载的用户请联系客服处理。